Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média de pontos com um Chassi de zakspeed 881?
 ###Tabelas: CREATE TABLE scaled_taxation (scaled_taxation_id AUTO_INCREMENT PRIMARY KEY, Currency Bracket: VARCHAR, Dollars Taxed in Bracket: VARCHAR, Rate: VARCHAR, Taxes From Bracket: VARCHAR, After Tax Income: VARCHAR, Percentage of Income Kept: VARCHAR) CREATE TABLE recordings (recordings_id AUTO_INCREMENT PRIMARY KEY, Pianist VARCHAR, Conductor VARCHAR, Record Company VARCHAR, Year of Recording INT, Format VARCHAR) CREATE TABLE european_nations_cup__all-time_table_2000-2013 (european_nations_cup__all-time_table_2000-2013_id AUTO_INCREMENT PRIMARY KEY, Champs INT, Games INT, Draw INT, Lost INT, Win/Lose Percentage VARCHAR) CREATE TABLE complete_world_championship_formula_one_results (complete_world_championship_formula_one_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Chassis VARCHAR, Engine(s) VARCHAR, Tyres VARCHAR, Points INT) CREATE TABLE ladies_european_tour_career_summary (ladies_european_tour_career_summary_id AUTO_INCREMENT PRIMARY KEY, Year INT, Tournaments played INT, Cuts made INT, Wins INT, 2nd INT, 3rd INT, Top 10s INT, Best finish VARCHAR, Earnings ( € ) VARCHAR, Money list rank VARCHAR, Scoring average VARCHAR, Scoring rank VARCHAR, Rolex ranking INT)  
SELECT AVG Points FROM complete_world_championship_formula_one_results WHERE Chassis = zakspeed 881